JP2004286105A - Torque converter and its assembling method - Google Patents

Torque converter and its assembling method Download PDF

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Publication number
JP2004286105A
JP2004286105A JP2003077808A JP2003077808A JP2004286105A JP 2004286105 A JP2004286105 A JP 2004286105A JP 2003077808 A JP2003077808 A JP 2003077808A JP 2003077808 A JP2003077808 A JP 2003077808A JP 2004286105 A JP2004286105 A JP 2004286105A
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Japan
Prior art keywords
impeller shell
converter cover
torque converter
converter
fitting portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
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JP2003077808A
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Japanese (ja)
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JP4062142B2 (en
Inventor
Akihiko Sano
明彦 佐野
Tsutomu Kamiya
力 上谷
Yoshitaka Miura
吉孝 三浦
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Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H41/00—Rotary fluid gearing of the hydrokinetic type
    • F16H41/24—Details
    • F16H2041/243—Connections between pump shell and cover shell of the turbine

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  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that sputter enters into the inside to form impurities when joining an impeller shell of a torque converter and a converter cover with arc welding. <P>SOLUTION: FSW (friction stirring work) which is free of sputtering is applied to a fitting portion 8 between the impeller shell 1 and the converter cover 2 to be joined together. On this purpose, inner and outer bonded faces forming the fitting portion between the impeller shell and the converter cover are exposed onto the end face opposed to a FSW star rod 7 which comes near from the axial direction. During joining the bonded faces with the FSW, a shoulder portion 1b is formed on the impeller shell or the converter cover for supporting the load of the star rod. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明はトルクコンバータの構造または組立方法の改良に関する。
【０００２】
【従来の技術とその解決すべき課題】
トルクコンバータは、そのインペラシェルとコンバータカバーとをアーク溶接で結合することにより組み立てるようにしたものが一般的である。
【０００３】
しかしながら、アーク溶接による組立では、溶接時に生じるスパッタが嵌合部の隙間を抜けてコンバータ内に侵入し、金属粒状の夾雑物となってＡＴＦに混入するのが避けられないので、これをろ過するためにメッシュの細かい高性能なフィルタを設ける必要がある。
【０００４】
【特許文献１】特開２００１−１１６１０９号公報
【０００５】
【課題を解決するための手段】
本発明では、インペラシェルとコンバータカバーとの嵌合部を摩擦撹拌により結合する構成とする。このために、インペラシェルとコンバータカバーとの嵌合部を形成する内外接合面を、軸方向から寄り付く摩擦撹拌用のスターロッドに対向する端面上に露出させた構造とする。また、前記接合面を摩擦撹拌により結合する際に前記スターロッドの荷重を支持する肩部をインペラシェルまたはコンバータカバーに形成する。
【０００６】
本発明によるトルクコンバータの組立は、前記スターロッド押圧時の荷重を前記嵌合部端面の背面側に設けた肩部で支持しながら摩擦撹拌加工することにより行う。
【０００７】
【作用・効果】
本発明によれば、インペラシェルまたはコンバータカバーに形成した肩部にてスターロッドの押圧荷重を支持させながら摩擦撹拌による結合を行うので、インペラシェルとコンバータカバーとを強固に結合することができる。
【０００８】
摩擦撹拌加工ではスパッタが発生しないためトルクコンバータ内部への夾雑物の混入がなく、したがって高性能フィルタを設ける必要がない。また、摩擦撹拌加工では加工物に対する熱的負担が少ないため、組立時の熱変形を考慮した設計を行う必要がなく、特にコンバータカバーの内面にロックアップクラッチのフェーシング部を形成する場合にその形状精度を確保しやすい。さらに、従来のアーク溶接では困難であったアルミ系材料からなるインペラシェル、コンバータカバーの適用も可能になる。
【０００９】
【発明の実施の形態】
以下本発明の実施形態を図面に基づいて説明する。図１または図２は、実施形態に係るトルクコンバータの要部を概略的に示した半断面図である。図１において、１はトルクコンバータのインペラシェル、２はコンバータカバー、３はステータ、４はタービンランナ、５はロックアップクラッチを示している。インペラシェル１は、図示したようにインペラ６と対向するタービンランナ４を収装するように端部が開放した湾曲形の断面形状をしており、その開放端部に略円盤状のコンバータカバー２を嵌合することでトルクコンバータの容器部分を構成する。
【００１０】
インペラシェル１外周端の内側部分は、コンバータカバー２外周の接合面と嵌合する内側接合面となっており、これら内外の接合面は、軸方向から寄り付くＦＳＷ加工のためのスターロッド７に対向する端面上に露出する態様で嵌合部（インロー）８を形成している。
【００１１】
インペラシェル１には、その外周部１ａを挟んで前記嵌合部８と軸方向の相対する位置に肩部１ｂを形成している。この肩部１ｂは、摩擦撹拌加工（以下「ＦＳＷ」と表す。）による結合を行う際に、図示したジグ１０に載置してスターロッド７からの荷重を支持させるためのものである。肩部１ｂと嵌合部８との間には必要に応じてリブ１ｃを形成して軸方向の強度および剛性を確保する。嵌合部８はインペラシェル１およびコンバータカバー２の全周にわたって設けるが、肩部１ｂおよびリブ１ｃは要所にのみ設けるようにしてもよい。
【００１２】
ＦＳＷによる結合は、コンバータカバー２を嵌合したインペラシェル１の肩部１ｂをジグ１０に載せ、嵌合部８の接合面の上方からスターロッド７を寄り付かせて行う。回転するスターロッド７の先端部（プローブ）を接合面に当接することにより摩擦熱で加工物を溶融し、スターロッド７を接合面に沿って移動させるとその後方部分が固相接合状態となる。嵌合部８の接合面に沿ってスターロッド７を全周的に移動させることで結合は完了する。
【００１３】
図２は本発明の第２の実施形態である。この実施形態は、インペラシェル１外周の接合面とコンバータカバー２内周の接合面との間にインペラシェル１側からスターロッド７が寄り付くように嵌合部８を形成し、前記接合面の延長線上に位置するコンバータカバー２の外周端面を肩部２ｂとして形成した点で第１の実施形態と異なる。
【００１４】
この実施形態ではＦＳＷの作業時にインペラシェル１の側面にスターロッド７が寄り付くことから、嵌合部８を形成する肩部２ｂをやや外側へ張り出してあり、その分だけトルクコンバータの外径が大きくなる。ただし、コンバータカバー２の嵌合部８を形成する外周部分がそのまま肩部２ｂとなっているので、ＦＳＷ作業時のスターロッド７の荷重を支持させる際の強度および剛性の確保という点では有利である。
【００１５】
図３と図４に、インペラシェル１とコンバータカバー２との間の嵌合構造および組立方法の詳細を示す。これらは、インペラシェル１とコンバータカバー２とのあいだの接合面Ｓよりも内周側に位置するようにインペラシェル１に環状溝１１を、コンバータカバー２にこの環状溝１１に嵌合する環状突起１２をそれぞれ形成し、これら環状溝１１と環状突起１２とは組立完了状態で締り嵌め状態となるようにその形状または寸法を設定してある。
【００１６】
より詳細には、図３のものは環状溝１１と環状突起１２をそれぞれ相互に嵌合可能なように内外径が同一の直円筒状に、ただし環状突起１２の長さは環状溝１１の深さよりもやや長く形成してある。インペラシェル１とコンバータカバー２とを、図の（ａ）の位置から環状突起１２の先端部が環状溝１１の底部に当接する（ｂ）の位置まで嵌合したのち、軸方向に強い押圧力を作用させてコンバータカバー２を本来の嵌合完了位置まで移動させることで、（ｃ）に示したように環状突起１２を圧縮変形により径方向に膨張させて環状溝１１に強く密着させる。図４のものは、環状溝１１と環状突起１２とをテーパ形状とし、本来の嵌合位置の直前（ｂ）の位置で両者が当接するようにそれぞれの寸法を設定してある。この位置からコンバータカバー２を強く押圧して（ｃ）の位置に移動させることで環状溝１１と環状突起１２とのあいだの径方向の変形により応力を残留させて相互に密着状態とする。なお、環状溝１１をコンバータカバー２に、環状突起１２をインペラシェル１にそれぞれ設ける構成とすることもできる。
【００１７】
また、これらの実施形態では、前記環状溝１１と環状突起１２とによる嵌合構造の外側かつ接合面Ｓの一端に環状に空洞部１３を形成している。この空洞部１３を設けたことにより、ＦＳＷ作業時のスターロッドの押圧に伴い、空洞部１３の近傍にてインペラシェル１とコンバータカバー２の嵌合部８が図の（ｃ）に矢印で示したように互いに近接する向きに変形して接合面Ｓの密着度を高める。ＦＳＷ作業時には接合面間のギャップをできるだけ小さくすることが望ましいので、前記空洞部１３による接合面の密着作用により、ＦＳＷによる結合をより適切に行うことができる。
【００１８】
このようにして、図３または図４に示した実施形態によれば、環状溝１１と環状突起１２との強固な嵌合構造と、より良好なＦＳＷ加工結果が得られることにより、トルクコンバータの気密性をいっそう高めることができる。
【００１９】
ところで、この実施形態のトルクコンバータを組み立てるには、前述したようにして環状溝１１と環状突起１２とが締り嵌め状態となるようにインペラシェル１とコンバータカバー２とを嵌合させたうえでＦＳＷを実施するようにしてもよいが、環状溝１１と環状突起１２との間の締り嵌めそのものをＦＳＷ作業時のスターロッドからの荷重を利用して行わせることができる。すなわち、図３または図４の（ｂ）に示したように、環状溝１１と環状突起１２とが変形する直前の位置までインペラシェル１とコンバータカバー２とを嵌合させた状態で、嵌合部８の端面上に露出させた接合面Ｓにスターロッド（図示せず）を押圧してＦＳＷの作業を開始する。このとき、スターロッドの先端部に作用する押し付け力により接合と同時にコンバータカバー２を下方に押し込み、環状突起１２を変形させる。これにより、トルクコンバータの組立作業効率を高められる。
【図面の簡単な説明】
【図１】本発明の第１の実施形態に係るトルクコンバータの要部概略を示す半断面図。
【図２】本発明の第２の実施形態に係るトルクコンバータの要部概略を示す半断面図。
【図３】嵌合部の構造に関する実施形態の組立状態を示すための説明図。
【図４】嵌合部の構造に関する他の実施形態の組立状態を示すための説明図。
【符号の説明】
１ トルクコンバータのインペラシェル
１ｂ 肩部
２ コンバータカバー
２ｂ 肩部
５ ロックアップクラッチ
７ ＦＳＷ（摩擦撹拌加工）用のスターロッド
８ 嵌合部
１１ 環状溝
１２ 環状突起
１３ 空洞部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an improvement in a structure or an assembling method of a torque converter.
[0002]
[Prior art and problems to be solved]
Generally, a torque converter is assembled by connecting its impeller shell and a converter cover by arc welding.
[0003]
However, in the assembly by arc welding, it is inevitable that spatter generated at the time of welding passes through the gap of the fitting portion and enters the converter to be mixed into the ATF as metal granular impurities. Therefore, it is necessary to provide a high-performance filter with a fine mesh.
[0004]
[Patent Document 1] Japanese Patent Application Laid-Open No. 2001-116109
[Means for Solving the Problems]
In the present invention, the fitting portion between the impeller shell and the converter cover is configured to be connected by friction stirring. For this purpose, a structure is adopted in which the inner and outer joint surfaces forming the fitting portion between the impeller shell and the converter cover are exposed on the end surface facing the star rod for friction stirrer approaching from the axial direction. Further, a shoulder for supporting the load of the star rod when the joining surfaces are joined by friction stirring is formed on the impeller shell or the converter cover.
[0006]
Assembling of the torque converter according to the present invention is performed by friction stir processing while supporting the load at the time of pressing the star rod with a shoulder provided on the back side of the end face of the fitting portion.
[0007]
[Action / Effect]
According to the present invention, since the coupling by friction stirring is performed while supporting the pressing load of the star rod at the shoulder formed on the impeller shell or the converter cover, the impeller shell and the converter cover can be strongly coupled.
[0008]
In the friction stir processing, no spatter is generated, so that no foreign matter is mixed into the inside of the torque converter. Therefore, it is not necessary to provide a high-performance filter. In addition, the friction stir processing has a small thermal load on the workpiece, so there is no need to consider the thermal deformation during assembly, especially when the facing part of the lock-up clutch is formed on the inner surface of the converter cover. Easy to secure accuracy. Further, it is possible to apply an impeller shell and a converter cover made of an aluminum-based material, which are difficult with conventional arc welding.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 or FIG. 2 is a half sectional view schematically showing a main part of the torque converter according to the embodiment. 1, reference numeral 1 denotes an impeller shell of a torque converter, 2 denotes a converter cover, 3 denotes a stator, 4 denotes a turbine runner, and 5 denotes a lock-up clutch. The impeller shell 1 has a curved cross-sectional shape with an open end so as to accommodate the turbine runner 4 facing the impeller 6 as shown in the figure, and a substantially disk-shaped converter cover 2 is provided at the open end. Are fitted to form a container part of the torque converter.
[0010]
An inner part of the outer peripheral end of the impeller shell 1 is an inner joint surface that fits with a joint surface of the outer periphery of the converter cover 2, and these inner and outer joint surfaces face the star rod 7 for FSW processing that approaches from the axial direction. The fitting portion (slot) 8 is formed so as to be exposed on the end face to be formed.
[0011]
The impeller shell 1 has a shoulder 1b at a position axially opposed to the fitting portion 8 with the outer peripheral portion 1a interposed therebetween. The shoulder 1b is placed on the jig 10 to support the load from the star rod 7 when performing the joining by friction stir processing (hereinafter, referred to as "FSW"). A rib 1c is formed between the shoulder portion 1b and the fitting portion 8 as necessary to secure axial strength and rigidity. The fitting portion 8 is provided over the entire periphery of the impeller shell 1 and the converter cover 2, but the shoulder portion 1b and the rib 1c may be provided only at important points.
[0012]
The connection by the FSW is performed by placing the shoulder 1b of the impeller shell 1 fitted with the converter cover 2 on the jig 10 and leaning the star rod 7 from above the joint surface of the fitting portion 8. By contacting the tip (probe) of the rotating star rod 7 with the joining surface, the workpiece is melted by frictional heat, and when the star rod 7 is moved along the joining surface, the rear portion thereof is in a solid-phase joining state. . The connection is completed by moving the star rod 7 all around the joint surface of the fitting portion 8.
[0013]
FIG. 2 shows a second embodiment of the present invention. In this embodiment, a fitting portion 8 is formed between a joint surface on the outer periphery of the impeller shell 1 and a joint surface on the inner periphery of the converter cover 2 so that the star rod 7 approaches from the side of the impeller shell 1 and extends the joint surface. The difference from the first embodiment is that the outer peripheral end surface of the converter cover 2 located on the line is formed as a shoulder 2b.
[0014]
In this embodiment, since the star rod 7 approaches the side surface of the impeller shell 1 during the operation of the FSW, the shoulder 2b forming the fitting portion 8 is slightly protruded outward, and the outer diameter of the torque converter is increased by that much. Become. However, since the outer peripheral portion forming the fitting portion 8 of the converter cover 2 is the shoulder portion 2b as it is, it is advantageous in securing the strength and rigidity when supporting the load of the star rod 7 during the FSW operation. is there.
[0015]
3 and 4 show details of a fitting structure between the impeller shell 1 and the converter cover 2 and an assembling method. These are provided with an annular groove 11 in the impeller shell 1 and an annular projection fitted in the annular groove 11 in the converter cover 2 so as to be located on the inner peripheral side of the joint surface S between the impeller shell 1 and the converter cover 2. Each of the annular grooves 11 and the annular projections 12 is set to have a shape or a size such that the annular groove 11 and the annular protrusion 12 are in a tightly fitted state when the assembly is completed.
[0016]
More specifically, the one shown in FIG. 3 is a right cylindrical shape having the same inner and outer diameters so that the annular groove 11 and the annular protrusion 12 can be fitted to each other. It is formed slightly longer than it is. After the impeller shell 1 and the converter cover 2 are fitted from the position (a) in the figure to the position (b) where the tip of the annular projection 12 contacts the bottom of the annular groove 11, a strong pressing force is applied in the axial direction. Is caused to move the converter cover 2 to the original fitting completed position, so that the annular projection 12 is radially expanded by compressive deformation as shown in FIG. In FIG. 4, the annular groove 11 and the annular projection 12 are tapered, and their respective dimensions are set so that they abut at the position (b) immediately before the original fitting position. By strongly pressing the converter cover 2 from this position and moving it to the position (c), the radial deformation between the annular groove 11 and the annular projection 12 causes residual stress to be brought into close contact with each other. The annular groove 11 may be provided on the converter cover 2 and the annular protrusion 12 may be provided on the impeller shell 1.
[0017]
Further, in these embodiments, the hollow portion 13 is formed annularly outside the fitting structure of the annular groove 11 and the annular protrusion 12 and at one end of the joint surface S. By providing the hollow portion 13, the fitting portion 8 of the impeller shell 1 and the converter cover 2 near the hollow portion 13 is indicated by an arrow in FIG. As described above, they are deformed in directions approaching each other to increase the degree of adhesion of the bonding surface S. At the time of the FSW operation, it is desirable that the gap between the joining surfaces is as small as possible, so that the bonding by the FSW can be more appropriately performed by the close contact action of the joining surfaces by the cavity 13.
[0018]
In this manner, according to the embodiment shown in FIG. 3 or FIG. 4, a strong fitting structure between the annular groove 11 and the annular projection 12 and a better FSW processing result are obtained, so that the torque converter is improved. The airtightness can be further improved.
[0019]
Incidentally, in order to assemble the torque converter of this embodiment, the impeller shell 1 and the converter cover 2 are fitted together so that the annular groove 11 and the annular projection 12 are tightly fitted as described above, and then the FSW However, the interference fit between the annular groove 11 and the annular projection 12 itself can be performed by using the load from the star rod during the FSW operation. That is, as shown in FIG. 3 or FIG. 4B, the impeller shell 1 and the converter cover 2 are fitted to the position just before the annular groove 11 and the annular projection 12 are deformed. A star rod (not shown) is pressed against the joint surface S exposed on the end face of the part 8 to start the operation of the FSW. At this time, the converter cover 2 is pushed downward simultaneously with the joining by the pressing force acting on the tip of the star rod, and the annular projection 12 is deformed. Thus, the efficiency of assembling the torque converter can be increased.
[Brief description of the drawings]
FIG. 1 is a half sectional view schematically showing a main part of a torque converter according to a first embodiment of the present invention.
FIG. 2 is a half sectional view schematically showing a main part of a torque converter according to a second embodiment of the present invention.
FIG. 3 is an explanatory view showing an assembled state of the embodiment relating to the structure of the fitting portion.
FIG. 4 is an explanatory view showing an assembled state of another embodiment relating to the structure of a fitting portion.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Impeller shell 1b of torque converter 1 Shoulder 2 Converter cover 2b Shoulder 5 Lock-up clutch 7 Star rod 8 for FSW (friction stir processing) Fitting portion 11 Annular groove 12 Annular protrusion 13 Cavity

Claims (7)

インペラシェルとコンバータカバーとの嵌合部を形成する内外接合面を、軸方向から寄り付く摩擦撹拌加工用のスターロッドに対向する端面上に露出させると共に、前記接合面を摩擦撹拌により結合する際に前記スターロッドの荷重を支持する肩部をインペラシェルまたはコンバータカバーに形成したことを特徴とするトルクコンバータ。When exposing the inner and outer joint surfaces forming the fitting portion between the impeller shell and the converter cover on the end surface facing the star rod for friction stir processing approaching from the axial direction, when joining the joint surfaces by friction stir. A torque converter, wherein a shoulder for supporting the load of the star rod is formed on an impeller shell or a converter cover. インペラシェル内周の接合面とコンバータカバー外周の接合面との間にコンバータカバー側からスターロッドが寄り付く嵌合部を形成し、インペラシェルにその外周壁部を介してインペラ側の軸方向位置にてスターロッドの荷重を支持するように肩部を形成した請求項１に記載のトルクコンバータ。A fitting portion is formed between the joint surface on the inner periphery of the impeller shell and the joint surface on the outer periphery of the converter cover so that the star rod approaches the converter cover from the converter cover side. 2. The torque converter according to claim 1, wherein a shoulder is formed so as to support the load of the star rod. インペラシェル外周の接合面とコンバータカバー内周の接合面との間にインペラシェル側からスターロッドが寄り付くように嵌合部を形成し、前記接合面の延長線上に位置するコンバータカバーの外周端面を肩部として形成した請求項１に記載のトルクコンバータ。A fitting portion is formed between the joint surface on the outer periphery of the impeller shell and the joint surface on the inner periphery of the converter cover so that the star rod approaches from the impeller shell side, and the outer peripheral end surface of the converter cover positioned on an extension of the joint surface 2. The torque converter according to claim 1, wherein the torque converter is formed as a shoulder. インペラシェルとコンバータカバーとの間の嵌合部を、その端面上に露出した接合面にスターロッドを押圧して摩擦撹拌により結合するトルクコンバータの組立方法であって、
スターロッド押圧時の荷重を前記嵌合部端面の背面側に設けた肩部で支持しながら摩擦撹拌加工することを特徴とするトルクコンバータの組立方法。A method of assembling a torque converter in which a fitting portion between an impeller shell and a converter cover is pressed by a star rod against a joint surface exposed on an end face thereof and joined by friction stirring,
A method for assembling a torque converter, wherein friction stir processing is performed while supporting a load at the time of pressing a star rod with a shoulder provided on the back side of the end face of the fitting portion. 前記接合面よりも内周側に位置するようにインペラシェルまたはコンバータカバーの一方に環状溝を、他方にこの環状溝に嵌合する環状突起をそれぞれ形成し、これら環状溝と環状突起とは組立完了状態で締り嵌め状態となるようにその形状または寸法が設定されている請求項１に記載のトルクコンバータ。An annular groove is formed on one of the impeller shell or the converter cover so as to be located on the inner peripheral side with respect to the joining surface, and an annular projection is formed on the other, which fits into the annular groove. The annular groove and the annular projection are assembled. The torque converter according to claim 1, wherein the shape or the size is set so that a tight fit state is obtained in a completed state. 前記環状溝と環状突起との嵌合部と前記接合面との間に、接合面の一端に位置するように環状に空洞部を形成した請求項５に記載のトルクコンバータ。The torque converter according to claim 5, wherein a hollow portion is formed annularly between the fitting portion between the annular groove and the annular protrusion and the joining surface so as to be located at one end of the joining surface. インペラシェルまたはコンバータカバーの一方に、これらの嵌合部を形成する内外接合面よりも内周側に位置するように環状溝を、他方にこの環状溝に嵌合する環状突起を形成し、前記環状溝と環状突起とは組立完了状態で締り嵌め状態となるようにその形状または寸法が設定されると共に、
前記嵌合部はその端面上に露出させた接合面に摩擦撹拌加工用のスターロッドを押圧してインペラシェルとコンバータカバーとを結合するトルクコンバータの組立方法であって、
前記摩擦撹拌加工時のスターロッドの押圧力により前記環状溝と環状突起との間に締り嵌めの締結力を発生させることを特徴とするトルクコンバータの組立方法。An annular groove is formed on one of the impeller shell and the converter cover so as to be located on the inner peripheral side with respect to the inner and outer joint surfaces forming these fitting portions, and an annular projection is formed on the other side so as to be fitted into the annular groove. The shape and dimensions of the annular groove and the annular projection are set so as to be in a tightly fitted state in an assembled state, and
The fitting portion is a method of assembling a torque converter that couples an impeller shell and a converter cover by pressing a star rod for friction stir processing on a joint surface exposed on an end surface thereof,
A method of assembling a torque converter, wherein a tightening force of interference fit is generated between the annular groove and the annular projection by a pressing force of a star rod during the friction stir processing.
JP2003077808A 2003-03-20 2003-03-20 Torque converter and its assembly method Expired - Fee Related JP4062142B2 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
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JP2008057782A (en) * 2006-09-01 2008-03-13 Luk Lamellen & Kupplungsbau Beteiligungs Kg Seam gas welding for torque converter and method for gas welding torque converter
EP1900468A2 (en) 2006-09-14 2008-03-19 Nissan Motor Co., Ltd. Bonding structures for containers and method of bonding same
JP2009168116A (en) * 2008-01-15 2009-07-30 Nissan Motor Co Ltd Storage container, and method for assembling storage container
JP2009185939A (en) * 2008-02-07 2009-08-20 Nissan Motor Co Ltd Torque converter case and connecting method of torque converter case

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008057782A (en) * 2006-09-01 2008-03-13 Luk Lamellen & Kupplungsbau Beteiligungs Kg Seam gas welding for torque converter and method for gas welding torque converter
EP1900468A2 (en) 2006-09-14 2008-03-19 Nissan Motor Co., Ltd. Bonding structures for containers and method of bonding same
KR100925581B1 (en) * 2006-09-14 2009-11-06 닛산 지도우샤 가부시키가이샤 Bonding structure of container, bonding structure of torque converter case and bonding method of container
CN101153652B (en) * 2006-09-14 2010-06-02 日产自动车株式会社 Bonding structures for containers, torque converter shell and method of bonding same
US8052031B2 (en) 2006-09-14 2011-11-08 Nissan Motor Co., Ltd. Bonding structures for containers and method of bonding same
USRE43846E1 (en) 2006-09-14 2012-12-11 Nissan Motor Co., Ltd. Bonding structures for containers and method of bonding same
JP2009168116A (en) * 2008-01-15 2009-07-30 Nissan Motor Co Ltd Storage container, and method for assembling storage container
JP2009185939A (en) * 2008-02-07 2009-08-20 Nissan Motor Co Ltd Torque converter case and connecting method of torque converter case

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